A method is described for detecting a leakage during the operation of a braking system. A braking intention signal characterizing a braking intention is generated by actuating a final control system of an actuating circuit; a setpoint braking pressure required in an active circuit is ascertained based on the braking intention signal; an actual braking pressure in the active circuit is set according to the setpoint braking pressure with the aid of a pressure generation unit by moving a displacement piston to actuate a wheel brake coupled to the active circuit; and a pressure modulation is carried out. The pressure modulation includes setting the actual braking pressure in the active circuit to a value greater than the setpoint braking pressure, and lowering the actual braking pressure until the setpoint braking pressure is reached by moving the displacement piston at a predetermined piston speed. Furthermore, a chronological pressure gradient is ascertained, as the actual braking pressure is being lowered, during the pressure modulation, and a leakage of the active circuit is detected based on the ascertained pressure gradient when the pressure gradient is outside a range predetermined for the piston speed.

A method is described for detecting a leakage during the operation of a braking system. A braking intention signal characterizing a braking intention is generated by actuating a final control system of an actuating circuit; a setpoint braking pressure required in an active circuit is ascertained based on the braking intention signal; an actual braking pressure in the active circuit is set according to the setpoint braking pressure with the aid of a pressure generation unit by moving a displacement piston to actuate a wheel brake coupled to the active circuit; and a pressure modulation is carried out. The pressure modulation includes setting the actual braking pressure in the active circuit to a value greater than the setpoint braking pressure, and lowering the actual braking pressure until the setpoint braking pressure is reached by moving the displacement piston at a predetermined piston speed. Furthermore, a chronological pressure gradient is ascertained, as the actual braking pressure is being lowered, during the pressure modulation, and a leakage of the active circuit is detected based on the ascertained pressure gradient when the pressure gradient is outside a range predetermined for the piston speed.

An electronically controllable pneumatic brake system. The brake system includes at least two brake circuits, wherein a first of the at least two brake circuits is allocated an electrically and pneumatically controllable control valve and a second of the at least two brake circuits is allocated an electrically controllable parking brake valve in order to predetermine braking pressures so as to actuate wheel brakes of the respective brake circuit. The brake system further includes a first control unit configured to electrically actuate the electrically and pneumatically controllable control valve in dependence upon a vehicle desired deceleration and a second control unit configured to electrically control the parking brake valve in dependence upon the vehicle desired deceleration that is requested in an automated manner. In addition, the brake system includes at least one bypass valve to which a control valve is allocated.

An electronically controllable pneumatic brake system. The brake system includes at least two brake circuits, wherein a first of the at least two brake circuits is allocated an electrically and pneumatically controllable control valve and a second of the at least two brake circuits is allocated an electrically controllable parking brake valve in order to predetermine braking pressures so as to actuate wheel brakes of the respective brake circuit. The brake system further includes a first control unit configured to electrically actuate the electrically and pneumatically controllable control valve in dependence upon a vehicle desired deceleration and a second control unit configured to electrically control the parking brake valve in dependence upon the vehicle desired deceleration that is requested in an automated manner. In addition, the brake system includes at least one bypass valve to which a control valve is allocated.

An object of the present invention is to prevent a cost increase and an increase in an installation space due to a redundant arrangement of a vehicle motion control apparatus. A vehicle control apparatus includes an input portion configured to receive an input of a target state from a vehicle motion control controller equipped with a first vehicle motion control function configured to determine the target state for achieving a target route input from an autonomous driving controller, a first control portion configured to control a motion state based on the target state input from the input portion, and a second control portion equipped with a second vehicle motion control function configured to determine the target state for achieving the target route input from the autonomous driving controller and configured to control the motion state based on the target state input from the input portion.

An object of the present invention is to prevent a cost increase and an increase in an installation space due to a redundant arrangement of a vehicle motion control apparatus. A vehicle control apparatus includes an input portion configured to receive an input of a target state from a vehicle motion control controller equipped with a first vehicle motion control function configured to determine the target state for achieving a target route input from an autonomous driving controller, a first control portion configured to control a motion state based on the target state input from the input portion, and a second control portion equipped with a second vehicle motion control function configured to determine the target state for achieving the target route input from the autonomous driving controller and configured to control the motion state based on the target state input from the input portion.

A controller includes a failure detection unit that detects a failure in a first power supply system, and a power supply system control unit that closes a relay in a case where an execution of an automatic parking function starts and, during the execution of the function, causes the first power supply system to supply power, without causing a second power supply system to supply power, to the electric brake device, by setting a target output voltage of the second power supply system lower than an output voltage of the first power supply system when the failure detection unit does not detect the failure, and operates the electric brake device by setting the target output voltage to a voltage within a range in which the electric brake device is operable when the failure detection unit detects the failure.

A controller includes a failure detection unit that detects a failure in a first power supply system, and a power supply system control unit that closes a relay in a case where an execution of an automatic parking function starts and, during the execution of the function, causes the first power supply system to supply power, without causing a second power supply system to supply power, to the electric brake device, by setting a target output voltage of the second power supply system lower than an output voltage of the first power supply system when the failure detection unit does not detect the failure, and operates the electric brake device by setting the target output voltage to a voltage within a range in which the electric brake device is operable when the failure detection unit detects the failure.

Embodiments of a parking brake and anti-theft apparatus for a vented disc brake system are described herein. Such embodiments may include a brake assembly, an actuator and a rocker or a locking arm. The brake assembly by include a first and second rotor plates separated by spacers and slots. The rocker and locking arm may include pawls extending from an edge, and may be positioned adjacent to a circumference of the rotor plates, aligned between the rotor plates. The actuator may move the rocker and/or locking arm between locked an unlocked positions such that, in the locked configuration, the pawls are inserted into the slots, and in the unlocked configuration, the pawls are disposed outside the slots.

Embodiments of a parking brake and anti-theft apparatus for a vented disc brake system are described herein. Such embodiments may include a brake assembly, an actuator and a rocker or a locking arm. The brake assembly by include a first and second rotor plates separated by spacers and slots. The rocker and locking arm may include pawls extending from an edge, and may be positioned adjacent to a circumference of the rotor plates, aligned between the rotor plates. The actuator may move the rocker and/or locking arm between locked an unlocked positions such that, in the locked configuration, the pawls are inserted into the slots, and in the unlocked configuration, the pawls are disposed outside the slots.